omnicron
Bronze Member
So guys for next year I'm considering a 5" or 6" dredge. Our laws state the nozzle should be no more then 5" and under 15hp if I remember right, so I'm tending towards a 6". But I have a few questions in regards to that.
The place I'm dredging under normal water conditions is no more then 4' deep to bedrock. It is also around 8' wide in most places with most places being about 12" deep. I know I can build rock dams to raise the water level so that not to much of a issue right now but could be with a larger dredge. Based on the amount of larger cobbles I have to move by hand I can move about 3'x8'x4' forward with my nozzle per day.
1. Based on depth of creek, can a 6" be ran ok with a single engine/pump? Looking at keene and proline they are all built with dual engines. My hose will be no longer then 15' and I might build a couple jet instead of using a jet log. My engine will be 15hp to meet law requirements.
2. I need a idea of how much more material i'll be able to move with a 5" and a 6" based on what I can move per day with my 4". I know there is a lot of variables involved with what I'm asking. To put this in perspective, I'm finding a average of 1 gram per foot that I move forward, some areas are better and worse but it all averages out.
3. Is depth of creek going to be too much of a issue with a 6" or will rock dams still be ok to raise water level.
EDIT: Btw if I go 6" route I would put a 5" ring at the nozzle to meet the requirements.
If I think of any more I'll add to this list.
Thanks!!!
The place I'm dredging under normal water conditions is no more then 4' deep to bedrock. It is also around 8' wide in most places with most places being about 12" deep. I know I can build rock dams to raise the water level so that not to much of a issue right now but could be with a larger dredge. Based on the amount of larger cobbles I have to move by hand I can move about 3'x8'x4' forward with my nozzle per day.
1. Based on depth of creek, can a 6" be ran ok with a single engine/pump? Looking at keene and proline they are all built with dual engines. My hose will be no longer then 15' and I might build a couple jet instead of using a jet log. My engine will be 15hp to meet law requirements.
2. I need a idea of how much more material i'll be able to move with a 5" and a 6" based on what I can move per day with my 4". I know there is a lot of variables involved with what I'm asking. To put this in perspective, I'm finding a average of 1 gram per foot that I move forward, some areas are better and worse but it all averages out.
3. Is depth of creek going to be too much of a issue with a 6" or will rock dams still be ok to raise water level.
EDIT: Btw if I go 6" route I would put a 5" ring at the nozzle to meet the requirements.
If I think of any more I'll add to this list.
Thanks!!!
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